It's no secret that Stevie played his amps cranked and preferred a little cleaner sound from the front end allowing you to hear more power tube breakup. This is our SRV Option Retube Kit for the Classic 100 and it contains a matched octet of JJ EL84's for power along with a 5751 for V1, a standard ECC83S for V2 and a graded high current ECC83S for V3. Just let us know in the comments section if you're looking for max headroom, moderate or an early breakup so we can select a proper grade for the power tubes.